const int digit1Pin = 8;
const int digit2Pin = 9;
int M = 13;
int K = 12;
int H = 11;
const int segmentPins[] = {1, 2, 3, 4, 5, 6, 7, 0};

const byte digits[] = {
  B11000000, 
  B11111001, 
  B10100100, 
  B10110000, 
  B10011001, 
  B10010010, 
  B10000010, 
  B11111000, 
  B10000000, 
  B10010000, 
};

void setup() {
  pinMode(digit1Pin, OUTPUT);
  pinMode(digit2Pin, OUTPUT);
  pinMode(M, OUTPUT);
  pinMode(K, OUTPUT);
  pinMode(H, OUTPUT);

  for (int i = 0; i < 8; i++){
    pinMode(segmentPins[i], OUTPUT);
  }
}

void loop() {
  digitalWrite(M, HIGH);
  for (int i = 9000; i >= 0; i--){
    displayNumber(digit1Pin, i / 1000);
    delay(2);
    displayNumber(digit2Pin, (i / 100) % 10);
    delay(2);
  }
   digitalWrite(M, LOW);
   digitalWrite(K, HIGH);
  for (int i = 3000; i >= 1; i--){
    displayNumber(digit1Pin, i / 1000);
    delay(2);
    displayNumber(digit2Pin, (i / 100) % 10);
    delay(2);
}
   digitalWrite(K, LOW);
   digitalWrite(H, HIGH);
  for (int i = 6000; i >= 0; i--){
    displayNumber(digit1Pin, i / 1000);
    delay(2);
    displayNumber(digit2Pin, (i / 100) % 10);
    delay(2);
}
  digitalWrite(H, LOW);
}
void displayNumber(int digitPin, int number) {
  // Matikan semua digit
  digitalWrite(digit1Pin, LOW);
  digitalWrite(digit2Pin, LOW);

  for (int i = 0; i < 8; i++) {
    if (bitRead(digits[number], i)){
    digitalWrite(segmentPins[i], HIGH);
  } else {
    digitalWrite(segmentPins[i], LOW);
  }
  }

  digitalWrite(digitPin, HIGH);
}